KR0176138B1 - Vcr with edit controlling mode - Google Patents

Abstract

1. The technical field to which the invention described in the claims belongs:

The present invention relates to an edited video cassette recorder used for broadcast and business purposes.

2. The technical problem to be solved by the invention:

The present invention provides a video cassette recorder having an editing function capable of editing a predetermined image without providing an additional editing controller.

3. Summary of the solution of the invention:

A video cassette recorder having an edit control function, comprising: storage means for storing edit information in order of event numbers of edit information input corresponding to positions of user bits in a time code, and edit mode selection signals and edits sequentially inputted And at least control means for sequentially reading the edit information stored in the storage means in response to the start signal, and outputting a control signal such that information corresponding to the read edit information is reproduced and input from the player.

4. Important uses of the invention:

It can be used in broadcast and commercial video cassette recorders for building editing systems.

Description

Video cassette recorder with edit control

1 is a block diagram of a conventional editing system.

2 is a block diagram of an editing system according to the present invention.

3 is a timecode format diagram showing a general timecode configuration.

4 is a correlation diagram of a user bit of a time code and an image editing unit for explaining a predetermined image editing process according to the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video cassette recorder, and more particularly, to a video cassette recorder capable of editing and controlling a predetermined image without a separate editing controller. Editing video cassette recorders (hereinafter referred to as VCRs), which are usually used for broadcasting and for business purposes, edit a predetermined picture by constructing an editing system as shown in FIG. 1 is a block diagram of a general editing system, and includes a player 10, an editing controller 30, and an editing VCR 20. As shown in FIG. In FIG. 1, the player 10 operates under the control of the editing controller 30, reproduces the audio signal and the video signal recorded on the tape, and outputs the audio signal and the video signal to the editing VCR 20. FIG.

The editing VCR 20 connected to the player 10 and the editing controller 30 receives the audio signal AS and the video signal VS input from the player 10 under the control of the editing controller 30. It is edited and recorded on the tape. That is, in the related art, since a correct editing system can be constructed only when a separate editing controller 30 is provided, the system construction cost according to the editing controller 30 increases, and the space utilization for editing system operation is limited. There was this following issue.

Accordingly, an object of the present invention is to provide a video cassette recorder having an edit control function capable of editing a predetermined picture without a separate edit controller.

According to an aspect of the present invention, there is provided a video cassette recorder having an edit control function, comprising: storage means for storing edit information in order of event numbers of edit information input corresponding to positions of user bits in a time code; At least control means for sequentially reading the edit information stored in the storage means in response to the edit mode selection signal and the edit start signal inputted to the control mode, and outputting a control signal such that information corresponding to the read edit information is reproduced and input from the player; It is characterized by including.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 shows a block diagram of an editing system according to the present invention, which is largely comprised of a player 40 and an editing VCR 50. As shown in FIG. In Fig. 2, the player 40 reproduces and outputs the audio signal AS and the video signal VS recorded on the tape by the control signal CS of the editing VCR 50.

The editing VCR 50 is output from the player 40 by including an image editing unit including a time code generation circuit and a front panel capable of generating a plurality of key data. The audio signal AS and the video signal VS are inputted and recorded on the tape surface.

Hereinafter, the operation of the image editing unit according to the present invention will be described with reference to the format diagram of the time code generated by the time code generating circuit provided in the editing VCR 50.

3 shows an 80-bit time code (TC) format diagram of a general SMPTE, in which a 4-bit time code TC and a user bit (UB) are alternately arranged. In (3a) of FIG. 3, the 4-bit timecode TC is represented by time {(8), (7)}, minute {(6), (5)}, seconds {(4), (3)}, and frame { (2), (1)} information and shows the absolute address information of the tape. On the other hand, (3b) shows the user bit UB, and in general, the number and data number of the tape are written in the user bit UB.

4 is a detailed configuration diagram of the image editing unit according to the present invention. The image editing unit is a time code generating circuit capable of recording edit information in a user bit UB which is not generally used in the format diagram of time code TC, a memory 60, and a microcomputer that collectively controls playback / recording operations. It consists of 70. The user bit UB can be used to subscribe to a tape number or data number as in the prior art, but can be used to provide editing information according to an embodiment of the present invention. That is, by adding a switching circuit, the function of the user bit UB can be dualized by selection of general users. In the following embodiment of the present invention, it is assumed that the user bit UB is used for providing an edit point.

In FIG. 4, the 4-bit user bit UB is represented by the event number (h), the time (g), the minute ((f), (e)}, the second ((d), (c)}, and the frame { (b), (a)} and up to 16 frames can be selected. The event number becomes address information of the memory 60 and includes time (g), minutes ((f), (e)}, seconds {(d), (c)}, and frames {(b), (a)}. The information is recorded in the memory area addressed as the edit point. On the other hand, the player and recorder of the editing VCR 50 are distinguished by a colon (:) on / off between the time g and the minute {(f), (e)} of the user bit UB.

For example, the editing VCR 50 is operated as a player when the colon (:) is on and as a recorder when the colon (:) is off. The memory 60 stores the edit information indicated by the user bit UB in the event number order under the control of the microcomputer 70 as the S-RAM memory. At this time, the address of the memory 60 is composed of 5-bit data obtained by adding the 4-bit event number h and the 1-bit colon (:) that is the player / recorder classification data.

On the other hand, the microcomputer 70 connected to the memory 60 is a microcomputer on a normal timecode board, and responds to the reception of the key data of the front panel of the editing VCR 50 by the microcomputer 70. To control. For example, the microcomputer 70 sequentially reads the edit information stored in the memory 60 and generates and outputs a control signal CS to the player 40 so that the image information corresponding to the read address is reproduced.

Hereinafter, an operation example of the present invention in which a predetermined image can be edited without a separate editing controller will be described with reference to FIG. 4.

First, when a playback / recording selection switch provided on the front panel of the editing VCR 50 is selected, the playback / recording selection signal generated in response to this is input to the microcomputer 70 on the timecode board. The microcomputer 70 switches the timecode switch to the user bit UB in response to the input of the play / record selection signal, and receives an edit in / out point of the play / record from the front panel.

In this case, the user may input up to 16 replay / record in / out edit points, and an event number h corresponding to the replay / record in / out edit point is recorded in an address of the memory 60. Thereafter, when the microcomputer 70 receives the edit mode (insert / assemble mode) selection signal and the edit start signal sequentially from the front panel, the microcomputer 70 performs the edits in the order of the addresses (ie, event numbers) in the memory 60 in response thereto. Run Therefore, it is possible to build a complete editing system without providing an additional editing controller.

As described above, the present invention has the advantage that the cost saving effect of having the editing controller can be obtained by replacing the editing controller function by using the user bits and the memory of the time code, and improving the space utilization by deleting the editing controller. There are advantages to be made.

Claims (2)

A video cassette recorder having an edit control function, comprising: storage means for storing edit information in order of event numbers of edit information input corresponding to positions of user bits in a time code, and edit mode selection signals and edits sequentially inputted And at least one control means for sequentially reading the edit information stored in the storage means in response to the start signal, and outputting a control signal such that information corresponding to the read edit information is reproduced and input from the player. Video cassette recorder having a. The video cassette recorder of claim 1, wherein the edit information comprises an event number, an hour, a minute, a second, and frame information, and is stored at an address designated by the event number.